Johnson Reservoir
Low Hazard ConditionEmergency Action Plan: Not Required
Location
| State | Montana |
| County | Dawson |
| Nearest City | INTAKE |
| River/Stream | DEER CREEK |
| Coordinates | 47.31420, -105.09740 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 21 ft |
| Dam Height | 21 ft |
| Dam Length | 1,500 ft |
| Year Completed | 1937 (89 years old) |
Storage & Hydraulics
| NID Storage | 351 acre-ft |
| Max Storage | 351 acre-ft |
| Normal Storage | 208 acre-ft |
| Surface Area | 35 acres |
| Drainage Area | 17 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | STATE OF MONTANA, D.F.W.P. |
| Owner Type | State |
| Hazard Classification | Low |
| Last Inspection | 07/17/2024 |
| Emergency Action Plan | Not Required |